Search for H I bubbles around Wolf-Rayet stars between l =302° and 312°

We have studied the distribution of neutral hydrogen gas (H I) surrounding Wolf-Rayet stars closer than 10 kpc in the section of our Galaxy between l = 302° and l = 312°. H I bubbles were observed surrounding WR 48, 52, 54, 57, and 61. We find that almost all WR stars located at galactic latitudes |...

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Publicado: 1991
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046256_v101_n2_p572_Niemela
http://hdl.handle.net/20.500.12110/paper_00046256_v101_n2_p572_Niemela
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00046256_v101_n2_p572_Niemela
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spelling paper:paper_00046256_v101_n2_p572_Niemela2023-06-08T14:27:07Z Search for H I bubbles around Wolf-Rayet stars between l =302° and 312° We have studied the distribution of neutral hydrogen gas (H I) surrounding Wolf-Rayet stars closer than 10 kpc in the section of our Galaxy between l = 302° and l = 312°. H I bubbles were observed surrounding WR 48, 52, 54, 57, and 61. We find that almost all WR stars located at galactic latitudes |b| higher than 2° appear associated with H I bubbles. The fact that we do not observe H I bubbles around WR stars close to b = 0°, is most probably a selection effect, since due to the greatly increased gas density, these bubbles would be smaller than our spatial resolution. In the H I bubbles observed around the WC type stars, WR 48, 52, and 57, the star appears always located near the higher density border closest to the galactic plane. The two WN-type stars, WR 54 and 61, appear locafed near the center of large H I bubbles. 1991 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046256_v101_n2_p572_Niemela http://hdl.handle.net/20.500.12110/paper_00046256_v101_n2_p572_Niemela
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We have studied the distribution of neutral hydrogen gas (H I) surrounding Wolf-Rayet stars closer than 10 kpc in the section of our Galaxy between l = 302° and l = 312°. H I bubbles were observed surrounding WR 48, 52, 54, 57, and 61. We find that almost all WR stars located at galactic latitudes |b| higher than 2° appear associated with H I bubbles. The fact that we do not observe H I bubbles around WR stars close to b = 0°, is most probably a selection effect, since due to the greatly increased gas density, these bubbles would be smaller than our spatial resolution. In the H I bubbles observed around the WC type stars, WR 48, 52, and 57, the star appears always located near the higher density border closest to the galactic plane. The two WN-type stars, WR 54 and 61, appear locafed near the center of large H I bubbles.
title Search for H I bubbles around Wolf-Rayet stars between l =302° and 312°
spellingShingle Search for H I bubbles around Wolf-Rayet stars between l =302° and 312°
title_short Search for H I bubbles around Wolf-Rayet stars between l =302° and 312°
title_full Search for H I bubbles around Wolf-Rayet stars between l =302° and 312°
title_fullStr Search for H I bubbles around Wolf-Rayet stars between l =302° and 312°
title_full_unstemmed Search for H I bubbles around Wolf-Rayet stars between l =302° and 312°
title_sort search for h i bubbles around wolf-rayet stars between l =302° and 312°
publishDate 1991
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046256_v101_n2_p572_Niemela
http://hdl.handle.net/20.500.12110/paper_00046256_v101_n2_p572_Niemela
_version_ 1768543447151542272

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